Transformation of brookite-type TiO2 nanocrystals to rutile: correlation between microstructure and photoactivity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F06%3A00050332" target="_blank" >RIV/61388980:_____/06:00050332 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/06:12575

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Transformation of brookite-type TiO2 nanocrystals to rutile: correlation between microstructure and photoactivity

Original language description

Nanometric particles of pure brookite TiO2 were synthesized by modified thermolysis of reactant solutions containing titania powder, HCl, urea and PEG 10000. Unique flower-like brookite agglomerates with an average diameter of similar to 400-450 nm composed of single brookite nanocrystals of similar to 4-5 nm were obtained at 105 degrees C. The brookite -> rutile transformation has been studied and TiO2 mixtures with variable amount of anatase, brookite and rutile polymorphs at different temperatures (from 200 to 800 degrees C) were obtained. High resolution transmission electron microscopy (HRTEM), electron diffraction pattern and BET/BJH analyses were used to characterize the phase assemblages, crystallite size and pore volume of the pure-phase brookite and TiO2 mixtures. In order to understand the metastable-stable TiO2 phase transformation X-ray powder diffraction (XRD) was performed.

Czech name

Transformace brookituTiO2 nanokrystalů na rutil TiO2: korelce mezi mikrostrukturou a fotoaktivitou

Czech description

Transformace brookituTiO2 nanokrystalů na rutil TiO2: korelce mezi mikrostrukturou a fotoaktivitou.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Materials Chemistry

ISSN

0959-9428

e-ISSN

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Volume of the periodical

16

Issue of the periodical within the volume

18

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

1709-1716

UT code for WoS article

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EID of the result in the Scopus database

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